Three 521 sizes expand the Calibrex™ line larger dispensing volumes ranging from 2 to 20 ml, 10 to 50 ml and 10 to 100 ml. Similar to the 520 model in many respects, such as construction quality, sturdiness, chemical resistance, smooth plunger travel, in-lab calibration, autoclaving, the 521 mode has a distinct black design. Also fitted with the Solid Calibration adjustment system, the Calibrex™ 521 has an additional fine-tuning ring. Each dispenser has a 32 mm screw thread and included with each unit are three adapters (38, 40, 45 mm) and a 300 mm feed tube (375 mm for Cat. No. 844023).
